Nitric Acid → 1-(2,6-Difluoro-3-nitrophenyl)ethanone

HRID 571697

反応式

HRID 571697 の反応式
OS(O)(=O)=O.[N+:6]([O-:9])(O)=[O:7].[F:10][C:11]1[CH:16]=[CH:15][CH:14]=[C:13]([F:17])[C:12]=1[C:18](=[O:20])[CH3:19]>C(Cl)Cl>[F:10][C:11]1[C:16]([N+:6]([O-:9])=[O:7])=[CH:15][CH:14]=[C:13]([F:17])[C:12]=1[C:18](=[O:20])[CH3:19]

参加物

5

反応物 3

HCID 944Nitric AcidHCID 1118Sulfuric AcidHCID 836431-(2,6-Difluorophenyl)ethan-1-one

生成物 1

HCID 138536371-(2,6-Difluoro-3-nitrophenyl)ethanone

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

反応条件

温度
-40 °C

実験手順

To a −40° C. mixture of concentrated H2SO4 (100 mL) and fuming HNO3 (100 mL) was added 1-(2,6-difluorophenyl)ethanone (20 g, 128 mmol) dropwise. The resulting mixture was stirred at −40° C. for 2 h then poured slowly onto ice. That mixture was diluted with DCM and the phases were separated. The aqueous layer was neutralized with sat. aq. NaHCO3 and then extracted with DCM. All organic portions were combined, dried over MgSO4, filtered, and concentrated to give 1-(2,6-difluoro-3-nitrophenyl)ethanone (26.3 g, 131 mmol, >theoretical) that was used without further purification.

後処理

  1. additionthen poured slowly onto ice
  2. customthe phases were separated
  3. extractionextracted with DCM
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated

出典と根拠

ORDレコード
ord-fdffe23e2db44304b83f1530697be30a
出典データセット
uspto-grants-2015_05
特許番号
US09029362B2

関連ノート

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